Validation logic for partition name will fail if the host name has '-'

The validation logic for Instance name fails
if the host name has '-' character.

https://github.com/openstack/nova-dpm/blob/1.0.0/nova_dpm/virt/dpm/vm.py#L69-L87

closes-Bug: 1670949

Change-Id: I82bf4313e46dc273e7307900549fa488cf43b5bd
Signed-off-by: Prabhat Ranjan <pranjank@in.ibm.com>

nova_dpm/tests/unit/virt/dpm/test_vm.py

@@ -0,0 +1,51 @@
+# Copyright 2016 IBM Corp. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from nova.test import TestCase
+from nova_dpm.virt.dpm import vm
+
+
+class ValidPartitionNameTestCase(TestCase):
+
+    def setUp(self):
+        super(ValidPartitionNameTestCase, self).setUp()
+
+    def test_is_valid_partition_name(self):
+        # All name should be in this format
+        # OpenStack-hostname-[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}
+        # where hostname is basically host of 'self.flags(host='foo').
+        self.flags(host='foo')
+        name1 = 'OpenStack-foo-6511ee0f-0d64-4392-b9e0-cdbea10a17c3'
+        self.assertTrue(vm.is_valid_partition_name(name1))
+
+        self.flags(host='foo-bar')
+        name2 = 'OpenStack-foo-bar-6511ee0f-0d64-4392-b9e0-cdbea10a17c3'
+        self.assertTrue(vm.is_valid_partition_name(name2))
+
+        self.flags(host='foo-bar')
+        name3 = 'invalid_name'
+        self.assertFalse(vm.is_valid_partition_name(name3))
+
+        self.flags(host='foo')
+        name4 = 'fooOpenStack-foo-6511ee0f-0d64-4392-b9e0-cdbea10a17c3'
+        self.assertFalse(vm.is_valid_partition_name(name4))
+
+        self.flags(host='foo')
+        # Name should be in this format
+        # OpenStack-hostname-[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}
+        #  but name5 is in
+        # OpenStack-hostname-[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{13}
+        # See at last instead of 12 character it is 13 character.
+        name5 = 'OpenStack-foo-6511ee0f-0d64-4392-b9e0-cdbea10a17c31'
+        self.assertFalse(vm.is_valid_partition_name(name5))

nova_dpm/virt/dpm/vm.py

@@ -36,8 +36,6 @@ from zhmcclient._exceptions import NotFound
 CONF = conf.CONF
 OPENSTACK_PREFIX = 'OpenStack'
 CPCSUBSET_PREFIX = 'CPCSubset='
-UUID_PATTERN = re.compile(
-    r'^[\da-f]{8}-([\da-f]{4}-){3}[\da-f]{12}$', re.IGNORECASE)
 
 
 DPM_TO_NOVA_STATE = {
@@ -72,17 +70,19 @@ def is_valid_partition_name(name):
     which is managed by openstack
 
     The valid format is
-    'OpenStack-Instance-6511ee0f-0d64-4392-b9e0-cdbea10a17c3'
+    'OpenStack-hostname-6511ee0f-0d64-4392-b9e0-cdbea10a17c3'
+    where hostname is CONF.host
 
     :param name: name of partition
     :return: bool
     """
-    split_name = name.split('-', 2)
-    if len(split_name) > 2:
-        if split_name[0] == OPENSTACK_PREFIX:
-            if split_name[1] == CONF.host:
-                if UUID_PATTERN.match(split_name[2]):
-                    return True
+    partition_name_regx = (
+        re.compile(r"^" + OPENSTACK_PREFIX +
+                   "-" +
+                   CONF.host +
+                   "-[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}$"))
+    if partition_name_regx.match(name):
+        return True
     return False